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Cornerstone · Grades 3–5 Keystones #1 15 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄4

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 51

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 37, 34, 5, 7, 14, 28, 50

    Answer: 25

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